Actual construction of the preamp tubes

[deeder]

May be an old info, here is a very interesting investigation about preamp tube construction: NOS vs. modern production:
http://www.marshallforum.com/threads/mu ... son.31194/

[Bob S]

Thanks for sharing.
Interesting stuff which confirms what we see in new production tubes.

[Phil_S]

Good link to a good post. Thank you. I wasn't surprised. I'm doubtful anyone here will be, but it is good to see the facts.